10道五年级分数乘除法脱式计算 五年级分数乘除法脱式计算
\u4e94\u5e74\u7ea7\u4e0a\u5206\u6570\u4e58\u9664\u8131\u5f0f\u8ba1\u7b97\u9898300\u9053\u6709\u54ea\u4e9b\uff1f5/3 \u00d7 11/5 + 4/3
45 \u00d7 2/3 + 1/3 \u00d7 15
7/19 + 12/19 \u00d7 5/6
1/4 + 3/4 \u00f7 2/3
8/7 \u00d7 21/16 + 1/2
101 \u00d7 1/5 \u2013 1/5 \u00d7 21
50\uff0b160\u00f740
\uff0858+370\uff09\u00f7\uff0864-45\uff09
120-144\u00f718+35
347+45\u00d72-4160\u00f752
\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
95\u00f7\uff0864-45\uff09
178-145\u00f75\u00d76+42
420+580-64\u00d721\u00f728
9 \u00d7 5/6 + 5/6
3/4 \u00d7 8/9 - 1/3
7 \u00d7 5/49 + 3/14
6 \u00d7\uff08 1/2 + 2/3 \uff09
8 \u00d7 4/5 + 8 \u00d7 11/5
31 \u00d7 5/6 \u2013 5/6
9/7 - \uff08 2/7 \u2013 10/21 \uff09
5/9 \u00d7 18 \u2013 14 \u00d7 2/7
4/5 \u00d7 25/16 + 2/3 \u00d7 3/4
14 \u00d7 8/7 \u2013 5/6 \u00d7 12/15
812-700\u00f7\uff089+31\u00d711\uff09
\uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09
85+14\u00d7\uff0814+208\u00f726\uff09
\uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09
120-36\u00d74\u00f718+35
\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
(6.8-6.8\u00d70.55)\u00f78.5
0.12\u00d7 4.8\u00f70.12\u00d74.8
\uff083.2\u00d71.5+2.5\uff09\u00f71.6
3.2\u00d7\uff081.5+2.5\uff09\u00f71.6
3/14 \u00d7\u00d7 2/3 + 1/6
1/5 \u00d7 2/3 + 5/6
9/22 + 1/11 \u00f7 1/2
5/3 \u00d7 11/5 + 4/3
45 \u00d7 2/3 + 1/3 \u00d7 15
7/19 + 12/19 \u00d7 5/6
1/4 + 3/4 \u00f7 2/3
8/7 \u00d7 21/16 + 1/2
10.15-10.75\u00d70.4-5.7
5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5
[\uff087.1-5.6\uff09\u00d70.9-1.15] \u00f72.5
5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62]
12\u00d76\u00f7\uff0812-7.2\uff09-6
12\u00d76\u00f77.2-6
8/9 \u00d7 15/36 + 1/27
12\u00d7 5/6 \u2013 2/9 \u00d73
8\u00d7 5/4 + 1/4
6\u00f7 3/8 \u2013 3/8 \u00f76
4/7 \u00d7 5/9 + 3/7 \u00d7 5/9
5/2 -\uff08 3/2 + 4/5 \uff09
7/8 + \uff08 1/8 + 1/9 \uff09
17/32 \u2013 3/4 \u00d7 9/24
3 \u00d7 2/9 + 1/3
5/7 \u00d7 3/25 + 3/7
101 \u00d7 1/5 \u2013 1/5 \u00d7 21
如下：
1. 4/9×4/3=16/27
2. 1/3×1/3=1/9
3. 1/2×1/3=1/6
4. 4/5×3/4=3/5
5. 8/7×1/2=4/7
6. 3/5×5/8=3/8
7. 6/7×3/2=9/7
8. 5/6×8/3=20/9
9. 4/11×3/4=3/11
10. 4/9×3/8=1/6
乘除法
1、分数乘整数，分母不变，分子乘整数，最后能约分的要约分。
2、分数乘分数，用分子乘分子，用分母乘分母，最后能约分的要约分。
3、分数除以整数，分母不变，如果分子是整数的倍数，则用分子除以整数，最后能约分的要约分。
4、分数除以整数，分母不变，如果分子不是整数的倍数，则用这个分数乘这个整数的倒数，最后能约分的要约分。
5、分数除以分数，等于被除数乘除数的倒数，最后能约分的要约分。
4.2-0.6 40.5/5/0.9 2.8/0.4/5 0.7+2.56/0.4 5.8-3.24/0.6 0.8*3.5+0.3 5*6+42 64-9*5 200-10*19 15+36/18
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